diff --git a/NEWS b/NEWS
index 58c719001d..b66c269798 100644
--- a/NEWS
+++ b/NEWS
@@ -52,7 +52,8 @@ Removed Functionality
 Deprecated Functionality
 ------------------------
 
-TODO: nothing notable yet
+- Marked the Continuation.h and PacketDumper.h files as deprecated. The code
+  contained within them is unused by Zeek.
 
 Zeek 3.2.0
 ==========
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index e75d4f3a0b..266bae7b81 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -296,7 +296,6 @@ set(MAIN_SRCS
     bro_inet_ntop.c
     patricia.c
     setsignal.c
-    PacketDumper.cc
     strsep.c
     modp_numtoa.c
 
diff --git a/src/Continuation.h b/src/Continuation.h
index 455cf52a73..d29d353c57 100644
--- a/src/Continuation.h
+++ b/src/Continuation.h
@@ -1,3 +1,5 @@
+#warning "This file will be removed in v4.1. The code here is unused by Zeek. Notify a Zeek team member if your plugins are using this code."
+
 // Helper class to implement continuation-like mechanisms for
 // suspending/resuming tasks for incremental operation.
 //
diff --git a/src/PacketDumper.h b/src/PacketDumper.h
index cd66c3c07e..2065dc2ed3 100644
--- a/src/PacketDumper.h
+++ b/src/PacketDumper.h
@@ -1,3 +1,5 @@
+#warning "This file will be removed in v4.1. The code here is unused by Zeek. Notify a Zeek team member if your plugins are using this code."
+
 // See the file "COPYING" in the main distribution directory for copyright.
 
 #pragma once